2-Wire Connection Or 4-Wire Connection - Keysight M9614A Startup Manual

Connecting a DUT
Using the interlock circuit
The M9614A/M9615A provides an interlock function. If the interlock terminals are
open, the M9614A/M9615A cannot apply a high voltage over the limit which is
programmable, within42 V.
The interlock circuit is not necessary for the M9614A/M9615A because the
maximum output voltage is 30 V, but can be used to limit the output voltage to
the specified value.
For more details, see "Installing Interlock Circuit" on page 29.
Generally, environmental conditions, such as electromagnetic environment, have
a negative impact on the performance of the instrument. Use coaxial cables and
shielding technique to minimize the impact.

2-Wire Connection or 4-Wire Connection

When connecting a device under test (DUT), you can choose the connection type
either 2-wire connection or 4-wire connection.
If you want to simplify the connection, use 2-wire connection by connecting the
force terminals only, while the sense terminals remain open.
To make 4-wire connection, well known as Kelvin connection, use both force and
sense terminals. Connecting the force and sense lines together at the terminal of
the DUT minimizes the measurement error by the residual resistance of the test
leads or cables. This connection is effective for low resistance measurements and
high current measurements.
The M9614A/M9615A module has five-channel interfaces, and each channel has
five terminals: HF, LF, HS, LS, and Guard. Although LF is shared by all channels, it
is recommended to use each HF with the LF of the same channel.
Keysight M9614A/M9615A Startup Guide, Edition 1 25